Enum is showing as string in query parameter in swagger doc

"Swashbuckle.AspNetCore" Version="6.5.0"

[HttpGet]
public IHttpActionResult GetListByPriority (Priority priority)
{
   //
}

public enum Priority
{
    Low, 
    Medium,
    High
}

app.UseSwagger(o => o.SerializeAsV2 = true);